
<template>
    <div>
        <!-- 顶部滑动区域 -->
        <div id="slider" class="mui-slider">
				<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
					<div class="mui-scroll">
						<a :class="['mui-control-item',item.id==0?'mui-active':'']" v-for="item in cates" :key="item.id" @tap="getPhotoListByCateId(item.id)">
							{{item.title}}
						</a>
					
					</div>
				</div>

			</div>
   <!-- 图片懒加载区域 -->
      <ul class="photo-list">
        <router-link v-for="item in list" :key="item.id" to="/home/photoinfo"
        tag="li">
           <img v-lazy="item.img_url">
           <div class="info">
               <h1 class="info-title">{{ item.title }}</h1>
               <div class="info-body">{{ item.zhaiyao }}</div>
           </div>
        </router-link>
      </ul>
    </div>
 
</template>

<script>
import mui from "../../lib/mui/js/mui.min.js";

export default {
  data() {
    return {
      cates: [],
      photoList: [],
      list :[]
    };
  },
  created() {
    this.getAllCatesgory();
    // 默认加载全部图片数据
    this.getPhotoListByCateId(0);
  },
  mounted() {
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getAllCatesgory() {
      // 获取图片的分类列表
      this.$http.get("api/getimgcategory").then(result => {
        if (result.body.status === 0) {
          //手动凭借出一个最完整的分类列表
          result.body.message.unshift({ title: "全部", id: 0 });
          this.cates = result.body.message;
        }
      });
    },
    getPhotoListByCateId(cateId) {
      this.$http.get("api/getimages/" + cateId).then(result => {
        if (result.body.status === 0) {
          this.photoList = result.body.message;
        }
      });
    }
  }
};
</script>

<style lang="scss" scoped>
* {
  touch-action: pan-y;
}

.photo-list {
    list-style: none;
    padding: 10px;
    margin: 0;
    padding-bottom: 0;
  li {
     background-color: #ccc;
     text-align: center;
     margin-bottom: 10px;
     box-shadow: 0 0 10px #999;
     position: relative;
     
     img{
         width: 100%;
         vertical-align: middle;
     }
    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
    .info{
        color: white;
        text-align: left;
        position: absolute;
        bottom: 0;
        background-color: rgba(0,0,0,0.4);
        max-height: 84px;
        .info-title{
           font-size: 14px;
        }
        .info-body{
          font-size: 13px
        }
    }
  }
}
</style>

